A connection designates a specific program designated by a port number on a specific computer's IP address.

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Multiple Choice

A connection designates a specific program designated by a port number on a specific computer's IP address.

Explanation:
A network connection is defined by the endpoints involved, not by a single port on one computer. In TCP/IP, a connection is identified by the combination of local IP, local port, remote IP, remote port, and the protocol. The port points to an application on a host, but a connection spans two hosts and can involve multiple conversations over the same port with different remote endpoints. So you can’t designate a connection by just one computer’s IP and a port; the remote endpoint and the full four-tuple (plus protocol) are needed. For example, a client at 192.0.2.10:12345 talking to a server at 203.0.113.5:80 over TCP is a single connection defined by (192.0.2.10, 12345, 203.0.113.5, 80, TCP).

A network connection is defined by the endpoints involved, not by a single port on one computer. In TCP/IP, a connection is identified by the combination of local IP, local port, remote IP, remote port, and the protocol. The port points to an application on a host, but a connection spans two hosts and can involve multiple conversations over the same port with different remote endpoints. So you can’t designate a connection by just one computer’s IP and a port; the remote endpoint and the full four-tuple (plus protocol) are needed. For example, a client at 192.0.2.10:12345 talking to a server at 203.0.113.5:80 over TCP is a single connection defined by (192.0.2.10, 12345, 203.0.113.5, 80, TCP).

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